Personalized health history system with accommodation for consumer health terminology

ABSTRACT

Personalization of access to health-related information on a computer network is provided based upon a health history of a user. In one implementation, personal health-related information about the user is obtaining from the user operating a client computer. The health-related information includes one or more health-related terms that each corresponds to a health-related concept. The health related terms provided by the user are correlated with a health terminology thesaurus that is stored on a computer-readable medium, such as at a server remote from the user client. Each of the health-related terms is associated with a single concept unique identifier that uniquely identifies a corresponding health-related concept. Health-related works or content is made accessible over the computer network by correlating the concept unique identifiers for the user&#39;s health information with corresponding concept unique identifiers that are associated with the health-related content.

FIELD OF THE INVENTION

[0001] The present invention relates to providing personalized access to content that is available over a computer network and, in particular, to providing health-related content that is accurately personalized according to personal health information about the user, including health information that is described in lay medical terminology.

BACKGROUND AND SUMMARY OF THE INVENTION

[0002] Consumer health information is growing in importance and popularity, with computer networks such as the Internet providing a growing share of the information. It is estimated that health issues are addressed at tens of thousands of online sites with potentially millions of pages of health-related works or content. With a general lack of clinical and editorial standards for health-related content, lay consumers without specific medical training, and even trained medical professionals, can have relatively little success in finding desired or relevant information among such vast resources.

[0003] Moreover, given the extremely personal nature of health, most individuals have minimal interest in browsing materials that have no relevance to their health or the health of their families. Yet most of the health information available at conventional network (e.g., Internet) sites or portals addresses only general topics. Such information seldom has any particular relevance to individual users. Accordingly, there is a need for an improved way of obtaining relevant or personalized health-related content from computer networks such as the Internet.

[0004] Conventional network (e.g., Internet) systems employ a variety of personalization processes that at least minimally personalize a network site for different visitors or users. The personalization provided by many such processes is relatively simplistic and provides personalization only to the extent of a small number of personalization options. These conventional personalization processes include Greetings, which can be as simple as providing a “welcome sign” that informs the user of the state of a single condition, such as, “Hello you've got mail;” Pick Lists, which allow users to select from predetermined lists of news categories, horoscopes, sports scores, etc.; Keywords, codes or symbols, which can be referenced by entering keywords such as zip codes for local weather forecasts or stock ticker symbols for stock quotes; Demographic/traffic analysis, which is usually derived from a log file which indicates a user's name, email address, zip code, and Internet Service Provider information; Comparison methods, which use data provided by other users to highlight similarities and differences among users; and Collaborative processes, which select content or works based on the preferences of others who are in some way similar to the user.

[0005] Personalization processes in use today, including the use of demographics and pick-lists, are inadequate for the vast amounts of health-related information and the relatively narrow interests of many users. Pick Lists are useful, when the possible selections number fewer than several (e.g., 4 or 5) dozens. However, health related content can be usefully categorized among hundreds or thousands of distinct topics. As a consequence, conventional health-related network sites that employ Pick Lists for personalization typically provide relatively few selections that each cover broad areas of information. Such broad coverage areas render such personalization ineffective for the specific health-related information desired by many users.

[0006] The present invention provides personalization of access to health-related content on a computer network based upon a health history of a user. In one implementation, personal health-related information about the user is obtained from a user operating a client computer. The health-related information includes one or more health-related terms that each corresponds to a health-related concept. The personal health information may relate to health conditions, which may include medical diagnoses like diabetes, high blood pressure, pneumonia, or pregnancy, or any current or past health problems like poor vision, chronic joint pain, cancer, or alcoholism. The health information could also or alternatively relate to allergies, tests, vaccinations, surgeries or procedures, etc. that affect or have affected the health of the user or that are a part of the user's health history.

[0007] The health related terms provided by the user are correlated with a health terminology thesaurus that is stored on a computer-readable medium, such as at a server remote from the user client. Each of the health-related terms is associated with a single concept unique identifier that uniquely identifies a corresponding health-related concept. Each concept unique identifier has associated with it one or more terms corresponding to a common health-related concept. Some of the terms are clinical medical terms and others are lay medical terms that are not clinical medical terms.

[0008] Health-related works or content that is accessible over a computer network may be identified in a personalized manner based upon the concept unique identifiers. The health-related content may include, for example, health news, product and service information, disease information, medication information, and other health-related content. Each health-related work has associated with it one or more concept unique identifiers. Personalized identification of the health-related works entails matching the concept unique identifiers of the terms provided by the user with the concept unique identifiers of works relating to those terms. In addition, the Concept Unique Identifier is related to other Concept Unique Identifiers to give it greater semantic meaning and context. The relationships of concepts are derived from existing professional healthcare vocabularies, including Snomed, Medical Subject Headings, and International Classification of Diseases. These relationships allow the term “type 2 sugar disease” which equates to the concept of adult-onset diabetes mellitus, to be related as a narrower concept to diabetes mellitus, which in turn is a narrower concept than diabetes, which in turn is a narrower concept to endocrine and glandular disorders. This then allows an article written simply about “Diabetes” to find all those who would benefit from this information, including those who described themselves as having “type 2 sugar disease.”

[0009] The present invention provides personalized access to health-related information that can accommodate the particular interests of both professional and lay users and the vast amounts of and conflicting terminology in health-related information. In contrast, conventional personalization processes are inadequate for the particularized interests of users in combination with the vast and complex resources of health-related information.

[0010] Additional objects and advantages of the present invention will be apparent from the detailed description of the preferred embodiment thereof, which proceeds with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0011]FIG. 1 is a block diagram of a computer system that may be used to implement the present invention.

[0012]FIG. 2 is a flow diagram of a health history personalization process.

[0013]FIG. 3 is a block diagram of one implementation of a health history personalization computer system.

[0014]FIG. 4 is a diagrammatic illustration of a health information terminology wizard user interface.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0015]FIG. 1 illustrates an operating environment for an embodiment of the present invention as a computer system 20 with a computer 22 that comprises at least one high speed processing unit (CPU) 24 in conjunction with a memory system 26, an input device 28, and an output device 30. These elements are interconnected by at least one bus structure 32.

[0016] The illustrated CPU 24 is of familiar design and includes an ALU 34 for performing computations, a collection of registers 36 for temporary storage of data and instructions, and a control unit 38 for controlling operation of the system 20. The CPU 24 may be a processor having any of a variety of architectures including Alpha from Digital, MIPS from MIPS Technology, NEC, IDT, Siemens, and others, x86 from Intel and others, including Cyrix, AMD, and Nexgen, and the PowerPC from IBM and Motorola.

[0017] The memory system 26 generally includes high-speed main memory 40 in the form of a medium such as random access memory (RAM) and read only memory (ROM) semiconductor devices, and secondary storage 42 in the form of long term storage mediums such as floppy disks, hard disks, tape, CD-ROM, flash memory, etc. and other devices that store data using electrical, magnetic, optical or other recording media. The main memory 40 also can include video display memory for displaying images through a display device. Those skilled in the art will recognize that the memory 26 can comprise a variety of alternative components having a variety of storage capacities.

[0018] The input and output devices 28 and 30 also are familiar. The input device 28 can comprise a keyboard, a mouse, a physical transducer (e.g., a microphone), etc. The output device 30 can comprise a display, a printer, a transducer (e.g., a speaker), etc. Some devices, such as a network interface or a modem, can be used as input and/or output devices.

[0019] As is familiar to those skilled in the art, the computer system 20 further includes an operating system and at least one application program. The operating system is the set of software which controls the computer system's operation and the allocation of resources. The application program is the set of software that performs a task desired by the user, using computer resources made available through the operating system. Both are resident in the illustrated memory system 26.

[0020] In accordance with the practices of persons skilled in the art of computer programming, the present invention is described below with reference to acts and symbolic representations of operations that are performed by computer system 20, unless indicated otherwise. Such acts and operations are sometimes referred to as being computer-executed and may be associated with the operating system or the application program as appropriate. It will be appreciated that the acts and symbolically represented operations include the manipulation by the CPU 24 of electrical signals representing data bits which causes a resulting transformation or reduction of the electrical signal representation, and the maintenance of data bits at memory locations in memory system 26 to thereby reconfigure or otherwise alter the computer system's operation, as well as other processing of signals. The memory locations where data bits are maintained are physical locations that have particular electrical, magnetic, or optical properties corresponding to the data bits.

[0021]FIG. 2 is a flow diagram of a health history personalization process 50 for personalizing health-related content that is accessible by a user at a network-connected computer, the user commonly being a lay individual without specific medical training. The computer network may be private or public and may be a local area network or a wide area network. In one implementation, health history personalization process 50 operates and access to the health-related content are provided to the user over the Internet.

[0022] Process block 52 indicates that personal health information is collected about the user. The personal health information may relate to health conditions, which may include medical diagnoses like diabetes, high blood pressure, pneumonia, or pregnancy, or any current or past health problem like poor vision, chronic joint pain, cancer, or alcoholism.

[0023] Alternatively, the health information could relate to allergies, tests, vaccinations, surgeries or procedures, etc. that affect or have affected the health of the user or that are a part of the user's health history. For purposes of explanation, the following description is made with reference to the health information relating to health conditions. It will be appreciated that the description is similarly applicable to other types of health information, including information relating to allergies, tests, vaccinations, surgeries or procedures, etc.

[0024] Process block 54 indicates that the personal health information are correlated with predefined concept unique identifiers (CUIs). Each concept unique identifier uniquely identifies a predefined health-related concept (e.g., a health condition). The concept unique identifiers provide standardized identification of the predefined health-related concepts independent of traditional variations between lay medical and clinical medical terminology for health conditions, as described below in greater detail. In one implementation, the concept unique identifiers are in the form of alpha-numeric segments (e.g., 8 characters each). Alternatively, numeric or alphabetic segments could be used.

[0025] The concept unique identifiers are based on core medical concepts, enabling multiple synonyms and related terms to be mapped to the same concept unique identifier or code. For example, “hyperpeisis,” “elevated systolic pressure,” “high blood pressure,” “hypertensive vascular disease” and “high blood” are all used in consumer and professional circles to describe the same thing: high blood pressure. Accordingly, all these terms would be mapped or associated with a single concept unique identifier.

[0026] Process block 58 indicates that one or more concept unique identifiers are associated with each of many health-related works or content (e.g., health news, product and service information, disease information, medication information, and other health-related content that are available over the network) that relate to the predefined health-related concepts corresponding to the concept unique identifiers. The associations between the health-related content and the concept unique identifiers are maintained in a database as a data structure on a computer-readable medium.

[0027] In addition to the association of concept unique identifiers pertaining to the subject of the health related works, a combination of concept unique identifiers is associated with the health related works to identify the appropriate populations of users for whom the health-related work are most appropriate. Additive concept unique identifiers are used to identify populations of appropriate users, such as male, age 40-60, history of prostate cancer, on the medicine Lupron, and on the medicine Aspirin. Exclusion of concepts from the target population of users is also performed, such as the above criteria, but excluding users who are on the medicine Proscar.

[0028] As another example for how the system can utilize a combination of concept unique identifiers and excluded concept unique identifiers to define populations of appropriate recipients for health-related works, the association of subject-based concept unique identifiers to a news article entitled “Exercise found to reduce the risk for breast cancer” will result in the concept unique identifiers for breast cancer, breast cancer prevention, and exercise. This article then is also indexed with a combination of concept unique identifiers (additive and/or excluded) for which the article is most appropriate. For example, the above mentioned article would be “targeted” to women between the ages of 30 and 70 who are at risk for breast cancer but who have not had a history of breast cancer.

[0029] Process block 60 indicates that the concept unique identifiers for the personal health information collected about the user are correlated with the concept unique identifiers of health-related content available over the computer network to identify health-related content that is personalized for the user.

[0030] Process block 62 indicates that access to the personalized health-related content is provided to the user. It will be appreciated that the access to the content may be provided to the user in a number of ways. For example, the personalized health-related content may be provided as personalized hyperlinks that are selectable by the user or the content itself may be provided directly to the user. The access to the personalized health-related content may be provided to the user in several ways. For example, the access to the content may be “pushed” to the user without a specific request by the user for the information, but rather based upon the personal health information provided by the user. As another example, the access to the information may be provided to the user in response to a specific request or search by the user.

[0031] Exemplary concept unique identifiers and corresponding predefined health-related concepts or terms for several health conditions are listed below in Table 1. The relationship between each concept unique identifier and the corresponding health-related term or terms forms a data structure that is stored in a computer-readable medium and includes a concept unique identifier (e.g., alphanumeric) and one or more associated health-related terms. The data structure allows uniform identification of health-related concepts despite a variety of lay medical terms and clinical medical terms being in use. The listing of Table 1 is not exhaustive of the health condition medical terms to which the concept unique identifiers may be applied. TABLE 1 Clinical Medical Term or Terms Lay Medical Term CUI guarding of the abdomen-involuntary abdomen sensitive C0238547 to touch nipple discharge, abnormal abnormal nipple C0149741 discharge adrenalin-test adrenalin level C0201998 aminophylline, serum aminophylline level C0002575 amitriptyline, serum amitriptyline level C0202316 ammonia-test ammonia level C0201879 salicylate, serum aspirin level C0202463 congenital band syndrome baby bands C0220724 urination, bed wetting bed wetting C0014394 oropharynx lesion biopsy biopsy of throat C0192211 periods, menstrual-bleeding between bleeding between C0302811 menstrual periods ear discharges/bleeding bleeding from ear C0271412 HCG (qualitative-serum) blood HCG level C0430064 hemoglobin; serum blood hemoglobin C0523685 level lead-serum blood lead level C0524167 lithium, serum blood lithium level C0337452 born with an optic disc abnormality born with an C0521571 abnormal optic nerve tachypnea breathing fast C0231835 backbone fracture broken back C0080179 metacarpal fracture broken metacarpal C0272677 sacrum/coccyx fracture broken tailbone C0149860 monoplegia of lower extremity can't move leg C0154702 dysuria pain with urination C0028961 vision, night blindness can't see at night C0028077 inability to sleep can't sleep C0021603 smell, impaired can't smell C0481703 median nerve release carpal tunnel surgery C0196576 hoarseness or changing voice changing voice C0518179 chest laceration chest cut C0432951 Hiccups, Chronic chronic hiccups C0019521 chronic pain and fatigue condition chronic pain C0150055 diuretic water pill C0033231 hydroxyzine injection cortisone shot C0010137 computerized tomography of orbit CT of eye socket C0202754 CXR Chest XRay C0202783 Fracture broken C0016658 Diabetes mellitus Sugar disease C0011849 Coronary artery disease Heart disease C0010068 Arm pain Sore arm C0003795 Operative procedure of the knee Knee surgery C0187769 Family history of CL103117 high blood pressure At risk for heart CL200220 disease Knee ligament injury CL111745 sweat electrolytes test for cystic fibrosis C0428295

[0032] The concept unique identifiers and corresponding predefined health-related terms form a health terminology thesaurus that is stored on a computer-readable medium and provides the concept unique identifiers based upon the health-related terms. The consumer health terminology thesaurus incorporates terminology from many health-related vocabularies, including The Systematized Nomenclature of Medicine (SNOMED) promulgated by the College of American Pathologists and the International Classification of Diseases: 9th revision, Clinical Modification, promulgated by the Health Care Financing Administration, as well as the many consumer and lay medical terms created by WellMed, Inc. The thesaurus is an extension of the Unified Medical Language System (UMLS) Metathesaurus promulgated by the National Library of Medicine.

[0033]FIG. 3 is a block diagram of one implementation of a health history personalization computer system 100, which includes a user client 102 that communicates over a computer network 104 with a health history personalization server 106. Server 106 may be implemented as one or more server computers. In the case of multiple server computers, they may be local to each other or may be remote from each other and in communication via a computer network. User client 102 may be implemented as, for example, an interactive document or page that is accessible by the user at a client computer with conventional browser software.

[0034] Health history personalization server 106 stores a health terminology thesaurus 108 that correlates health terminology with concept unique identifiers. Health history personalization server 106 also includes health information personalization software 109 that cooperates with user client 102 for identifying the concept unique identifiers that correspond to personal health information (e.g., health conditions) specified by the user.

[0035]FIG. 4 is a diagrammatic illustration of a health information terminology wizard user interface 110 that is rendered on a display screen for the user by user client 102. Health information terminology wizard user interface 110 assists a user in providing personal health information to health history personalization computer system 100.

[0036] User interface 110 includes a health information (e.g., health condition) entry pane 112 in which the user is prompted to enter a current or past health condition. A graphical control 114 allows the user to commence a search of health terminology thesaurus 108 for terms that are related or correspond to the health condition terminology the user entered into entry pane 112. In one implementation, the commencing of the search results in the health condition terminology entered by the user being transmitted over network 104 to health history personalization server 106 where thesaurus 108 is stored.

[0037] Any health terms that health information personalization software 109 identifies in thesaurus as 108 corresponding or relating to the information entered by the user are returned for display in a health terminology (e.g., health conditions) pane 114 of user interface 110. A prompt instructs the user to select one of the returned health terms that best corresponds to the user's health condition. Alternatively, the user may select an instruction to store the health information (e.g., health condition) as entered in entry pane 112. In one optional implementation, user interface 106 includes a definitions pane 116 in which text definitions may be provided for health terms selected by the user from health terminology pane 114 (e.g., cystitis in the illustration of FIG. 4). Health information personalization software 109 further includes a health terminology spell checking component that checks the spelling of terms entered by the user. In the event of apparent misspellings or unrecognized terms, server 106 returns to health terminology pane 114 one or more suggested correct spellings. Health history personalization server 106 correlates a concept unique identifier with the health term selected by the user as corresponding to the user's health condition, unless the user selects the instruction to store the health information (e.g., health condition) as typed in entry pane 112 rather than one of the returned matches. The concept unique identifier is stored at server 106 with identifying information regarding the user. When submitting a query in the entry pane 112, users may use a word related to the desired result. For example, the user may enter “heart” in the health conditions entry pane 112 to retrieve a list of health conditions having to do with the heart. Similarly, the user may enter “diabetes” to find all health conditions related to diabetes.

[0038] Also stored at server 106 are a listing of health-related content that is available over the network and concept unique identifiers indicative of the subject matter of the content. For example, server 106 could store a link or a network address for a news article entitled “Gene Identified As Cause Of Skin Disease” having associated with it the subject concepts of Xeroderma Pigmentosa (concept C0043345), skin cancer (concept C0007114), and genetic research (concept C0243064).

[0039] Server 106 correlates the user's personal health information (e.g., health conditions) with the corresponding health-related content. Server 106 identifies content having the same concept unique identifiers as those associated with the user's personal health information. For example, the news article entitled “Gene Identified As Cause Of Skin Disease” could be correlated with users who have Xeroderma Pigmentosa (concept C0043345), and users with skin cancer (concept C0007114). Links to the news article could be provided to both groups of users either in response to searches they conduct related to the specified topics, or the links may be delivered to the users automatically as a “push” of potentially relevant information identified at server 106.

[0040] As stated above with reference to FIG. 3, server 106 may be implemented as one or more server computers. In one implementation, thesaurus 108 resides on a first one or more server computers, personalization software 109 resides on a second one or more server computers, and the profiles of the individual users reside on a third one or more server computers.

[0041] Having described and illustrated the principles of our invention with reference to an illustrated embodiment, it will be recognized that the illustrated embodiment can be modified in arrangement and detail without departing from such principles. It should be understood that the programs, processes, or methods described herein are not related or limited to any particular type of computer apparatus, unless indicated otherwise. Various types of general purpose or specialized computer apparatus may be used with or perform operations in accordance with the teachings described herein. Elements of the illustrated embodiment shown in software may be implemented in hardware and vice versa.

[0042] In view of the many possible embodiments to which the principles of our invention may be applied, it should be recognized that the detailed embodiments are illustrative only and should not be taken as limiting the scope of our invention. Rather, we claim as our invention all such embodiments as may come within the scope and spirit of the following claims and equivalents thereto. 

1. A computer-implemented method of personalizing a health history of a user, comprising: obtaining from the user personal health-related information about the user, the health-related information including one or more health-related terms that each corresponds to a health-related concept; and correlating with a health terminology thesaurus each of the one or more health-related terms with a single concept unique identifier that uniquely identifies a corresponding health-related concept, each concept unique identifier having associated with it one or more terms corresponding to a common health-related concept, ones of the terms being lay medical terms and not clinical medical terms.
 2. The method of claim 1 further comprising: identifying health-related content that is accessible over a computer network and that has associated with it the concept unique identifier of at least one of the health-related terms obtained from the user; and providing to the user computer network access to the health-related content.
 3. The method of claim 2 in which providing to the user computer network access to the health-related content includes providing the user a computer network link or address to the health-related content.
 4. The method of claim 2 in which the computer network access to the health-related content is pushed to the user without a specific request by the user for the content.
 5. The method of claim 2 in which the computer network access to the health-related content is provided to the user in response to a specific request by the user for the content.
 6. The method of claim 2 in which the health-related content has associated with it a logical combination of plural concept unique identifiers.
 7. The method of claim 6 in which the logical combination of plural concept unique identifiers includes a logical exclusion of at least one concept unique identifier.
 8. The method of claim 1 in which computer implementation of the method employs a client computer and a server computer that are interconnected by a computer network, the method further comprising: providing at the client computer a user interface with which the user provides the personal health-related information; transmitting the personal health-related information over the computer network to the server computer, the server computer storing the health terminology thesaurus; and correlating each of the one or more health-related terms with a single concept unique identifier at the server computer.
 9. The method of claim 8 in which the computer network includes the Internet.
 10. The method of claim 8 in which providing the user interface includes providing a health information terminology wizard that includes a health information entry pane in which the user is prompted to enter personal health information and a health terminology pane in which is rendered one or more health terms having associated concept unique identifiers and that relate to the personal health information entered into the health information entry pane.
 11. The method of claim 10 in which the health information terminology wizard further includes a definitions pane in which text definitions are provided for selected health terms rendered in the health terminology pane.
 12. In a computer-readable medium, computer software for personalizing a health history of a user, comprising: software for obtaining from the user personal health-related information about the user, the health-related information including one or more health-related terms that each corresponds to a health-related concept; and software for correlating with a health terminology thesaurus each of the one or more health-related terms with a single concept unique identifier that uniquely identifies a corresponding health-related concept, each concept unique identifier having associated with it one or more terms corresponding to a common health-related concept, ones of the terms being lay medical terms and not clinical medical terms.
 13. The medium of claim 12 further comprising: software for identifying health-related content that is accessible over a computer network and that has associated with it the concept unique identifier of at least one of the health-related terms obtained from the user; and software for providing to the user computer network access to the health-related content.
 14. The medium of claim 13 in which the software for providing to the user computer network access to the health-related content includes software for providing the user a computer network link or address to the health-related content.
 15. The medium of claim 13 in which the computer network access to the health-related content is pushed to the user without a specific request by the user for the content.
 16. The medium of claim 13 in which the computer network access to the health-related content is provided to the user in response to a specific request by the user for the content.
 17. The medium of claim 13 in which the health-related content has associated with it a logical combination of plural concept unique identifiers.
 18. The medium of claim 17 in which the logical combination of plural concept unique identifiers includes a logical exclusion of at least one concept unique identifier.
 19. The medium of claim 12 in which one portion of the medium is in a client computer and another portion of the medium is in a server computer that is interconnected with the client computer by a computer network, further comprising: software for providing at the client computer a user interface with which the user provides the personal health-related information; software for transmitting the personal health-related information over the computer network to the server computer, the server computer storing the health terminology thesaurus; and software for correlating each of the one or more health-related terms with a single concept unique identifier at the server computer.
 20. The medium of claim 19 in which the computer network includes the Internet.
 21. The medium of claim 19 in which the software for providing the user interface includes software for providing a health information terminology wizard that includes a health information entry pane in which the user is prompted to enter personal health information and a health terminology pane in which is rendered one or more health terms having associated concept unique identifiers and that relate to the personal health information entered into the health information entry pane.
 22. The medium of claim 21 in which the health information terminology wizard further includes a definitions pane in which text definitions are provided for selected health terms rendered in the health terminology pane.
 23. In a computer-readable medium, a data structure, comprising: one or more health-related terms corresponding to a common health-related concept; and a single concept unique indentifier for identifying the common health-related concept.
 24. The data structure of claim 23 in which one or more of the health-related terms are lay medical terms and not clinical medical terms.
 25. The data structure of claim 23 in which the concept unique identifier includes numeric characters.
 26. The data structure of claim 23 in which the concept unique identifier includes alpha-numeric characters.
 27. The data structure of claim 26 in which one or more of the health-related terms are lay medical terms and not clinical medical terms.
 28. In a computer-readable medium, computer software for personalizing a health history of a user, comprising: health terminology thesaurus software that associates each of one or more health-related terms with-a single concept unique identifier that uniquely identifies a corresponding common health-related concept, ones of the terms being lay medical terms and not clinical medical terms; and software for correlating one or more health-related terms relating to a user's health with corresponding concept unique identifiers in the health terminology thesaurus software.
 29. The medium of claim 28 further comprising: health-related content indicating software that indicates for plural health-related works that are accessible over a computer network one or more concept unique identifiers that uniquely identify health-related concepts addressed by the works; and software for correlating the one or more concept unique identifiers corresponding to the one or more health-related terms relating to the user's health with one or more health-related works having concept unique identifiers that are the same as those of the health-related terms relating to the user's health. 